Peter Gottlieb

Here is the answer to those tiresome multiplication table exercises with your child. This Android app will flash a sequence of multiplication table qu …

This app raises the algebra drill program to a whole new level. Instead of simply presenting the problem and leaving the student to work out the steps …

Here is a division drill that will develop skills in both basic division and mental arithmetic. To make the drill-pill easier to take, the program is …

Here is a game that tests your visual reflex, your short-term memory, and your ability to resolve a rapid sequence of images. Randomly selected digits …

This app is for anyone who has to calculate formulas: high school and college students in science, engineering, or business courses, as well as teache …

Can you read a number that's flashed on the screen for only a few milliseconds? This game will start with a few hundred milliseconds and reduce th …

Here is a division drill that will develop skills in both basic division and mental arithmetic. Yet it's simple enough to do while watching childr …

Here is a drill program that will improve the essential skills for any intermediate algebra student. This is an exercise in the factoring of quadratic …

Here is a painless way for the algebra student to develop proficiency in solving simultaneous linear equations. Here is a drill program that leads the …

Here is the best tool for improving a student's skill at factoring. The app presents a target number to be factored, and the student responds by e …